以乙炔为碳源,采用化学气相沉积法,在氩气气氛下,制备了炭微球(CMSs);并用硫酸和高锰酸钾的混合溶液对CMSs进行氧化处理,使其表面引入含氧官能团;然后用KH-570对氧化CMSs进行修饰并将甲基丙烯酸(MAA)接枝于CMSs表面,制得了接枝微粒PMAA/CMSs。用场发射扫描电子显微镜、红外光谱和热重分析对产物的结构和形貌进行了表征和分析。结果表明:采用逐步接枝法成功地将MAA接枝到CMSs表面,为CMSs在聚合物基体中分散、制备功能材料提供了途径。
Carbon microspheres(CMSs) were synthesized by chemical vapor deposition in Ar atmosphere using acetylene as the carbon source.First,H2SO4 /KMnO4 aqueous solution was used to oxidize the CMSs,and then the oxidized-CMSs were modified by KH-570.Finally,methyl acrylic acid(MAA) monomers were grafted onto the surface of modified-CMSs,and grafted particles PMAA /CMSs were prepared.The morphology and structure of the products were characterized by field emission scanning electron microscope,Fourier transform infrared spectrometry,and thermogravimetry.The results are as follows:PMAA were grafted onto CMSs by graft step by step,which lays an experimental and theoretical foundation for the dispersion of polymer matrix and the preparation of functional material.